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Stress fissure («sun spangle») in baltic amber
Fluid inclusions containing mica and quartz, in aquamarine from Pakistan
Two-Phase inclusions and rutile needles in rock crystal from Brazil
Two-phase inclusions in sapphire, Sri Lanka
Agate from Reichweiler, Germany
Colour zoning in ruby from Mong-Shu, Burma
Bubbles and swirls in moldavite (natural glass)
Fluid inclusions in quartz with bituminous daughter minerals, China

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